AppearanceParams: RecursivePartial<
    {
        font: PaymentSheet.FontConfig;
        colors: | PaymentSheet.GlobalColorConfig
        | {
            light: PaymentSheet.GlobalColorConfig;
            dark: PaymentSheet.GlobalColorConfig;
        };
        shapes: {
            borderRadius: number;
            borderWidth: number;
            shadow: PaymentSheet.ShadowConfig;
        };
        primaryButton: PaymentSheet.PrimaryButtonConfig;
        embeddedPaymentElement: PaymentSheet.EmbeddedPaymentElementAppearance;
    },
>

Used to customize the appearance of your PaymentSheet

MMNEPVFCICPMFPCPTTAAATR